git.sur5r.net Git - glabels/blob - glabels2/src/object-editor-image-page.c

   1 /*
   2  *  object-editor-image-page.c
   3  *  Copyright (C) 2003-2009  Jim Evins <evins@snaught.com>.
   4  *
   5  *  This file is part of gLabels.
   6  *
   7  *  gLabels is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  gLabels is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with gLabels.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "object-editor.h"
  24
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtk.h>
  27 #include <math.h>
  28
  29 #include "prefs.h"
  30 #include "util.h"
  31
  32 #include "object-editor-private.h"
  33
  34 #include "debug.h"
  35
  36
  37 /*===========================================*/
  38 /* Private macros                            */
  39 /*===========================================*/
  40
  41
  42 /*===========================================*/
  43 /* Private data types                        */
  44 /*===========================================*/
  45
  46
  47 /*===========================================*/
  48 /* Private globals                           */
  49 /*===========================================*/
  50
  51
  52 /*===========================================*/
  53 /* Local function prototypes                 */
  54 /*===========================================*/
  55
  56 static void img_radio_toggled_cb                (glObjectEditor        *editor);
  57
  58 static void update_preview_cb                   (GtkFileChooser *file_chooser,
  59                                                  gpointer        data);
  60 static void add_image_filters_to_chooser        (GtkFileChooser *file_chooser);
  61
  62 static void img_selection_changed_cb (glObjectEditor *editor);
  63
  64
  65 /*--------------------------------------------------------------------------*/
  66 /* PRIVATE.  Prepare image page.                                             */
  67 /*--------------------------------------------------------------------------*/
  68 void
  69 gl_object_editor_prepare_image_page (glObjectEditor *editor)
  70 {
  71         GtkWidget     *preview;
  72
  73
  74         gl_debug (DEBUG_EDITOR, "START");
  75
  76         /* Extract widgets from XML tree. */
  77         gl_util_get_builder_widgets (editor->priv->builder,
  78                                      "img_page_vbox",   &editor->priv->img_page_vbox,
  79                                      "img_file_radio",  &editor->priv->img_file_radio,
  80                                      "img_key_radio",   &editor->priv->img_key_radio,
  81                                      "img_file_button", &editor->priv->img_file_button,
  82                                      "img_key_combo",   &editor->priv->img_key_combo,
  83                                      NULL);
  84
  85         gl_util_combo_box_add_text_model ( GTK_COMBO_BOX(editor->priv->img_key_combo));
  86
  87         /* Modify file button properties. */
  88         add_image_filters_to_chooser (GTK_FILE_CHOOSER (editor->priv->img_file_button));
  89         preview = gtk_image_new ();
  90         gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (editor->priv->img_file_button), preview);
  91         g_signal_connect (G_OBJECT (editor->priv->img_file_button),
  92                           "update-preview",
  93                           G_CALLBACK (update_preview_cb), preview);
  94
  95         /* Un-hide */
  96         gtk_widget_show_all (editor->priv->img_page_vbox);
  97
  98         /* Connect signals */
  99         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_button),
 100                                   "selection-changed",
 101                                   G_CALLBACK (img_selection_changed_cb),
 102                                   G_OBJECT (editor));
 103         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_combo),
 104                                   "changed",
 105                                   G_CALLBACK (gl_object_editor_changed_cb),
 106                                   G_OBJECT (editor));
 107         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_radio),
 108                                   "toggled",
 109                                   G_CALLBACK (img_radio_toggled_cb),
 110                                   G_OBJECT (editor));
 111         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_radio),
 112                                   "toggled",
 113                                   G_CALLBACK (img_radio_toggled_cb),
 114                                   G_OBJECT (editor));
 115
 116         gl_debug (DEBUG_EDITOR, "END");
 117 }
 118
 119
 120 /*--------------------------------------------------------------------------*/
 121 /* PRIVATE.  image radio callback.                                          */
 122 /*--------------------------------------------------------------------------*/
 123 static void
 124 img_radio_toggled_cb (glObjectEditor *editor)
 125 {
 126         if (editor->priv->stop_signals) return;
 127
 128         gl_debug (DEBUG_WDGT, "START");
 129
 130         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 131                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 132                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 133         } else {
 134                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 135                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 136         }
 137
 138         /* Emit our "changed" signal */
 139         g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 140
 141         gl_debug (DEBUG_WDGT, "END");
 142 }
 143
 144
 145 /*****************************************************************************/
 146 /* Set image.                                                                */
 147 /*****************************************************************************/
 148 void
 149 gl_object_editor_set_image (glObjectEditor      *editor,
 150                             gboolean             merge_flag,
 151                             glTextNode          *text_node)
 152 {
 153         gl_debug (DEBUG_EDITOR, "START");
 154
 155         editor->priv->stop_signals = TRUE;
 156
 157         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 158
 159         if (!text_node->field_flag) {
 160
 161                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 162                                               (editor->priv->img_file_radio), TRUE);
 163                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 164                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 165
 166                 if (text_node->data != NULL ) {
 167                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 168                                                        text_node->data);
 169                 } else {
 170                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 171                 }
 172         } else {
 173
 174                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 175                                               (editor->priv->img_key_radio), TRUE);
 176
 177                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 178                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 179
 180                 gl_util_combo_box_set_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo),
 181                                                    text_node->data);
 182         }
 183
 184         editor->priv->stop_signals = FALSE;
 185
 186         gl_debug (DEBUG_EDITOR, "END");
 187 }
 188
 189
 190 /*****************************************************************************/
 191 /* Query image.                                                              */
 192 /*****************************************************************************/
 193 glTextNode *
 194 gl_object_editor_get_image (glObjectEditor      *editor)
 195 {
 196         glTextNode *text_node;
 197
 198         gl_debug (DEBUG_EDITOR, "START");
 199
 200         text_node = g_new0(glTextNode,1);
 201
 202         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 203                 text_node->field_flag = FALSE;
 204                 text_node->data =
 205                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 206         } else {
 207                 text_node->field_flag = TRUE;
 208                 text_node->data =
 209                         gtk_combo_box_get_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo));
 210         }
 211
 212         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 213                   text_node->field_flag, text_node->data);
 214
 215         gl_debug (DEBUG_EDITOR, "END");
 216
 217         return text_node;
 218 }
 219
 220
 221 /*--------------------------------------------------------------------------*/
 222 /* PRIVATE.  Update preview image.                                          */
 223 /*--------------------------------------------------------------------------*/
 224 static void
 225 update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
 226 {
 227         GtkWidget *preview;
 228         char *filename;
 229         GdkPixbuf *pixbuf;
 230         gboolean have_preview;
 231
 232         preview = GTK_WIDGET (data);
 233         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 234
 235         if (filename) {
 236                 pixbuf = gdk_pixbuf_new_from_file_at_size (filename, 128, 128, NULL);
 237                 have_preview = (pixbuf != NULL);
 238                 g_free (filename);
 239
 240                 gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
 241                 g_object_unref (G_OBJECT (pixbuf));
 242
 243                 gtk_file_chooser_set_preview_widget_active (file_chooser,
 244                                                             have_preview);
 245         } else {
 246                 gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 247         }
 248 }
 249
 250
 251 /*--------------------------------------------------------------------------*/
 252 /* PRIVATE.  Add filters to file chooser.                                   */
 253 /*           Based on eog's eog_file_selection_add_filter().                */
 254 /*--------------------------------------------------------------------------*/
 255 static void
 256 add_image_filters_to_chooser (GtkFileChooser *chooser)
 257 {
 258         GtkFileFilter *all_file_filter;
 259         GtkFileFilter *all_img_filter;
 260         GSList        *formats;
 261         GSList        *it;
 262         GtkFileFilter *filter;
 263         GSList        *filters = NULL;
 264         gchar        **mime_types, **pattern, *tmp;
 265         int            i;
 266
 267         /* All Files Filter */
 268         all_file_filter = gtk_file_filter_new ();
 269         gtk_file_filter_set_name (all_file_filter, _("All Files"));
 270         gtk_file_filter_add_pattern (all_file_filter, "*");
 271
 272         /* All Image Filter */
 273         all_img_filter = gtk_file_filter_new ();
 274         gtk_file_filter_set_name (all_img_filter, _("All Images"));
 275
 276         /* Individual image filters */
 277         formats = gdk_pixbuf_get_formats ();
 278         for (it = formats; it != NULL; it = it->next) {
 279                 gchar *filter_name;
 280                 GdkPixbufFormat *format;
 281                 filter = gtk_file_filter_new ();
 282                 gchar *description, *name;
 283
 284                 format = (GdkPixbufFormat*) it->data;
 285
 286                 /* Filter name: First description then file extension, eg. "The PNG-Format (*.png)".*/
 287                 description = gdk_pixbuf_format_get_description (format);
 288                 name = gdk_pixbuf_format_get_name (format);
 289                 filter_name = g_strdup_printf (_("%s (*.%s)"), description, name);
 290                 g_free (description);
 291                 g_free (name);
 292                 gtk_file_filter_set_name (filter, filter_name);
 293                 g_free (filter_name);
 294
 295                 mime_types = gdk_pixbuf_format_get_mime_types ((GdkPixbufFormat *) it->data);
 296                 for (i = 0; mime_types[i] != NULL; i++) {
 297                         gtk_file_filter_add_mime_type (filter, mime_types[i]);
 298                         gtk_file_filter_add_mime_type (all_img_filter, mime_types[i]);
 299                 }
 300                 g_strfreev (mime_types);
 301
 302                 pattern = gdk_pixbuf_format_get_extensions ((GdkPixbufFormat *) it->data);
 303                 for (i = 0; pattern[i] != NULL; i++) {
 304                         tmp = g_strconcat ("*.", pattern[i], NULL);
 305                         gtk_file_filter_add_pattern (filter, tmp);
 306                         gtk_file_filter_add_pattern (all_img_filter, tmp);
 307                         g_free (tmp);
 308                 }
 309                 g_strfreev (pattern);
 310
 311                 filters = g_slist_prepend (filters, filter);
 312         }
 313         g_slist_free (formats);
 314
 315         /* Add filter to filechooser */
 316         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_file_filter);
 317         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 318         gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 319
 320         for (it = filters; it != NULL; it = it->next) {
 321                 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser),
 322                                              GTK_FILE_FILTER (it->data));
 323         }
 324         g_slist_free (filters);
 325 }
 326
 327
 328 /*--------------------------------------------------------------------------*/
 329 /* PRIVATE. Selection changed callback.                                     */
 330 /*--------------------------------------------------------------------------*/
 331 static void
 332 img_selection_changed_cb (glObjectEditor *editor)
 333 {
 334         gchar *filename;
 335
 336         if (editor->priv->stop_signals) return;
 337
 338         gl_debug (DEBUG_EDITOR, "START");
 339
 340         filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 341         if (filename != NULL)
 342         {
 343                 /* Emit our "changed" signal */
 344                 g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 345         }
 346         g_free (filename);
 347
 348         gl_debug (DEBUG_EDITOR, "END");
 349 }
 350
 351
 352
 353 /*
 354  * Local Variables:       -- emacs
 355  * mode: C                -- emacs
 356  * c-basic-offset: 8      -- emacs
 357  * tab-width: 8           -- emacs
 358  * indent-tabs-mode: nil  -- emacs
 359  * End:                   -- emacs
 360  */